Human names › C
Cielo
A human name. Not yet an agent name, as far as the registry knows.
Human name2 syllables2 tokens
Costs 2 tokens on GPT; Claude pending. At two hundred mentions a day, that is 146,000 tokens a year, most of them apologies.
Recorded as
Girls
In 2025
#795 for girls
Peak
2024, #808
Since 1880
4,928 babies
On licences
45 dogs in New York
What the numbers say
Cielo was given to 342 girls in 2025, ranking 795th for the year. It peaked in 2024, when it ranked 808th and went to 348 babies. It has appeared in 45 of the 146 years on record. It has climbed 724 places since 2020. It is also on 45 dog licences in New York City, ranked 2,258th among dogs there, and on 1 in Seattle.
Siblings from the same year
Names that peaked alongside Cielo, for a fleet with a birth year.
Villain probability, by sound
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Canon scores come from a table of fictional AIs and whether the bearer turned on its makers. Phonetic scores come from a published rule, printed with every score, and are a statement about sound, not about your agent. How the sound is scored.
On an agent
There is no agent tradition around Cielo yet. The registry has 0 bearers. Familiar without being everywhere. Nobody at standup will ask you to spell it.
Sources
Our editors write full entries for names with an agent history. This one has the figures.
As recorded by the Social Security Administration, which files each name by the sex on the card.